To Prevent Overheating with an Oxyacetylene Flame, Keep the Torch

question 23

Multiple Choice

To prevent overheating with an oxyacetylene flame, keep the torch moving and hold the flame so that the inner cone is about ____ from the surface.

• A) 0.25 in
• B) 0.5 in
• C) 0.75
• D) 1 in

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